Knife sharpener



1. Knife sharpener

Fig. 1.1 is a perspective view of the knife sharpener;

Fig. 1.2 is another perspective view thereof;

Fig. 1.3 is a front elevation view thereof;

Fig. 1.4 is a side elevation view thereof;

Fig. 1.5 is another side elevation view thereof;

Fig. 1.6 is a top plan view thereof;

Fig. 1.7 is a bottom plan view thereof; and

Fig. 1.8 is an exploded perspective view thereof. 

CLAIM The ornamental design for a knife sharpener, as shown and described. 